SPATIO-TEMPORAL VARIATIONS OF HEAVY METALS IN Penaeus monodon AND AMIBIENT MEDIA OF COASTAL WEST BENGAL, INDIA

Author(s): Sangita Agarwal* and Abhijit Mitra

Abstract: The present study is an attempt to understand the dynamics of zinc, copper and lead in the muscles, gills and hepatopancreas of Penaeus monodon collected from two different stations in coastal West Bengal namely Jharkhali (Station 1) and Shankarpur (Station 2) in 2017 through four seasons (premonsoon, monsoon, postmonsoon and winter). The former station is located in the central Indian Sundarbans within the mangrove ecosystem and the location of the later station is in Midnapore district of West Bengal and is noted for fish landing activities. The heavy metals in the ambient media (water and sediment) and shrimp tissues followed the order Zn > Cu > Pb. The concentrations of the metals exhibited significant spatial variations and followed the order Shankarpur (Station 2) > Jharkhali (Station 1). The bioaccumulation exhibited significant organ specificity with highest values in hepatopancreas followed by gills and muscles, irrespective of seasons and stations.

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